SU1274735A1 - Method of regeneration of filtering charge - Google Patents

Abstract

This invention relates to water supply and. sewage and can be used in the purification of natural and waste water by filtration when vermiculite is used as the filtering material. The aim of the invention is to increase the degree of regeneration of the filter load from vermiculite. After using its filtering load from vermiculite, the natural water purification is first subjected to heat treatment at 400 ° C for 2-4 minutes, and then the treatment with ozone-air mixture containing ozone 10-20 mg / l of air, i with ozone supply 60-80 mg / kg load for 3-5 minutes 1 hp f-ly, (L 3 table.

Description

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The invention relates to water supply and sewage and can be used in the purification of natural and waste water by filtration when vermiculite is used as the filtering material.

. The purpose of the invention is to increase the degree of regeneration of the filtering load from vermiculite. For example, the filtering load from vermiculite after using it to purify natural water is first heat treated at 400-500 ° C for 2-4 minutes and then treated with ozone-air mixture containing 10- 20 mg of ozone in

The degree of regeneration of the filter loading,%, at the temperature of the heat treatment load, with

747352

1 liter of air, when ozone is supplied 6080 mg / kg load for 3-5 minutes.

The degree of regeneration of the load is determined by the results of water purification 5 during filtration.

The following indicators of water quality before and after filtration are determined: suspended matter content (mg / l), chromaticity (hail) and microbial count (DJT. / L).

The quality of the source water: the amount of suspended substances 280 mg / l; chromaticity 110 degrees; the number of microbial bodies is 8500 pcs / l.

The research results are presented in table 1-3.

Table 1

500

450

Note. Studies are carried out at

The degree of regeneration of the filter loading,%, when the content of mg of ozone / kg of vermiculite

Remarks a. Research is carried out at

supply of 70 mg of ozone / kg load for 3--5 min, when the ozone content in the mixture is 15 mg / l of air

Table 2

heat treatment of the load when for 3 min when the ozone content in the mixture is 15 mg / l of air

Note Research is carried out at

Claims (2)

1. A method of regenerating a filtering load, including its treatment with an ozone-air mixture, which is because, in order to increase the degree of regeneration of the load from vermiculite, the loading is subjected to table 3 heat treatment of the load for 4 minutes with an ozone flow rate of 80 kg / kg load for 5 MJIH. Processing at 400-500 ° C for 2-4 minutes, and the treatment is carried out with an ozone supply of 60-80 mg / kg load for 3-5 minutes. 2. The method according to claim 1, wherein the content of ozone in the mixture is 10-20 mg / l of air.